Table 1 – Priority group 1 power station features
| Power Station |
Year Commissioned |
General Description |
| Lake Echo |
1956 |
1595m of 2.5m to 2.9m diameter steel penstock. |
|
|
7.315m diameter steel surge tower. |
|
|
2.90m diameter self-closing butterfly HTV. |
|
|
1.524m diameter straight flow MIV. |
|
|
1/33.5MW Francis turbine with 0.838m diameter TRV. |
| Wayatinah |
1957 |
3320m concrete lined rock tunnel. |
|
|
1273m of 4.11m diameter twin woodstave pipelines. |
|
|
16.764m diameter steel surge tower. |
|
|
3/2.90m diameter self-closing butterfly HTVs. |
|
|
3/3.2m diameter steel penstocks each 230m in length. |
|
|
3/2.74m diameter butterfly MIVs. |
|
|
3/15MW Francis turbines with 0.828m diameter TRVs. |
| Tarraleah |
1938 – 1943 |
2135m of 2.6m diameter twin steel pipelines. |
|
|
Twin 5.486m diameter steel surge towers. |
|
|
6/1.529m diameter self-closing butterfly HTVs. |
|
|
6/584m 1.2m to 1.5m diameter steel penstocks. |
|
|
3/1.219m diameter cylindrically balanced MIVs. |
|
|
3/1.016m diameter latticed butterfly MIVs. |
|
|
3/English Electric 18MW Pelton turbines with diffusers. |
|
|
3/Boving 18MW Pelton turbine with deflectors. |
